A destination sign for buses is provided with means for adding a route number to the display device independently of the destination name displayed on the sign. The destination sign is of the electronic type in which a long destination name is displayed by showing two or more word units in time sequence on the same display device (10). The word units are stored in memory (18); a destination name selector (14) and logic means (16) addresses the desired combination of word units in sequence. A rou...

A method is described for improving the responsiveness and accuracy of a graphics system to user-initiated picking actions. In this method, the visual cueing and pick window positioning components of the graphics system tracking/picking function are temporarily separated at the time the user attempts to pick. By handling these two components of the tracking/picking function independently, both type 1 (failure to pick the desired item) and type 2 (picking an undesired item) errors are prevented. ...

In a display system having a palette for chrominance and/or luminance information, a display buffer for information defining the pixels of a display field, including index values for indexing the palette select the chrominance and/or luminance of the pixels, a windowing mechanism is provided for associating a different range of index values with each of a plurality of windows and for responding to index values stored at individual pixel positions in the display buffer to determine the visible ex...

Help is provided to the user of a data processing system having a work station, including a display, and input means including a visible on-screen indicator and a selection means, in response to a request from the user, information on the current state of the system is used to address a store of hierarchical help text information, thereby providing contextual help text which is displayed in a separate window on the display screen alongside information related to the task in hand. A help map func...

Using the character processing method having a plurality of processing schemes, character patterns are outputted in a plurality of windows using any of the processing schemes. The requirements of each window are discriminated, a processing scheme suited to a particular window is selected from the plurality of processing schemes in response to the requirements, and a character or graphic processed by the processing scheme selected for the window is outputted for each and every window.

The present invention provides a data processing system arranged to run a plurality of applications, each application being associated with one or more windows, and each window being under the control of a user interface provided by the system. A method of operating such a system is also provided. The system according to the invention comprises: a display device for displaying the windows to a user; an input means for receiving events entered by a user from a plurality of input devices connectab...

A process in a data processing system for handling messages received in a message queue in a message handling process for a graphical user interface. In response to receiving a message in the queue, a determination is made as to whether the error is a message. In response to an identification of an error message, that message is intercepted before processing by the message handling process. A determination is made as to whether a corrective action is required in response to the error message and...

A window generating circuit of an image processing apparatus which processes an image is provided. The circuit includes a main controller, a memory device, first, second and third registers, and a window generator. The main controller inputs an original clock signal and generates first and second line memory read control signals, first and second line memory write control signals, a pixel clock, and address signals for first and second line memories based on the original clock signal. The memory...

A system and method for dynamically displaying data items on a client computer. In one aspect of the invention, the client computer displays a graphical user interface having a windowing environment and a desktop. The desktop includes a ticker display pane for dynamically displaying the data items. The data items may contain hyperlinks so that a user has access to information on multiple server computers. The data items are displayed in a substantially continuous sequence and may be provided fro...

A system and method for documenting and displaying computer program code comprises a token annotation unit, a comment analyzer, a token parsing library, and a code outline unit. The token parsing library parses a program comprising related program code files into a set of constituent tokens. The token annotation unit selectively associates one or more annotations with tokens in a program by creating a token annotation object. When program code is displayed, the token annotation unit visually ide...